Why does a new car's brake produce a sharp and harsh sound?
2 Answers
When a new car's brake produces a sharp and harsh sound upon application, many car owners assume it must be a quality issue with the vehicle. However, this is not necessarily the case. New brake pads and rotors require a break-in period. When the brake is applied, if it happens to grind against a hard spot on the brake pad (due to the material of the pad), it can produce such noise, which is completely normal. Below is some relevant information: After the brake pads have been used for tens of thousands of kilometers: If this sharp and harsh sound occurs, it usually indicates that the brake pad thickness is nearing its limit, and this is an "alarm" sound signaling the need for replacement. When the brake pads have been used for a while but are still within their service life: This situation is often caused by foreign objects getting stuck in the brake system.
It's quite common for new cars to produce high-pitched squealing sounds shortly after purchase. The new brake pads may have slightly rough surfaces or contain small particles, causing friction noises when braking. Some manufacturers intentionally use harder materials to enhance braking performance, though this can lead to more noise. This is especially noticeable in the morning when there's dew or after rainy days when the iron discs develop slight rust. Don't worry—just drive more to allow the brakes to break in. The noise usually disappears after a few hundred kilometers. If it persists beyond 1,000 kilometers, it's advisable to visit the dealership for inspection, as the brake discs might be uneven or misaligned. New cars generally come with quality assurance, but regular brake system checks are a good habit to prevent minor issues from escalating.
